Envelope perforator



Oct. 18, 1932. w J. STANLEY 1,883,056

ENVELOPE PERFORATOR Filed June 29. 1931 I 'W//////// i I/ dbkozmq Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE WALTER J. STANLEY, OF SALEM, OHIO, ASSIGNOR TO THE CHURCH-BUDGET ENVELOPE COMPANY, OF SALEM, OHIO ENVELOPE PERFORATOR Application filed June 29,

This invention relates to new and useful improvements in perforating devices, and particularly to perforating devices for use in connection with envelope folding machines.

The principal object of the present invention is to provide a perforating means, for use with that part of an envelope folding machine which folds the back part of the envelope, by means of which a line of perforations may be made in the envelope, longitudinally, at the same time that said back is being folded onto the body of the envelo e.

iknother object is to provide a perforating device, for use in connection with an envelope folding machine, by means of which perfora'tions may be easily and properly made, at the desired position, and wherein the envelope will be quickly and properly disengaged from the perforated envelope, at the end of the perforating operation.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure l is a top plan view of the back folding portion of an envelope folding ma chine, with the present invention applied thereto.

Figure 2 is a vertical transverse sectional view, on the line 22 of Figure 1.

Figure 3 is an enlarged sectional detail view of the folding elements, with an envelope therebetween, and the perforator in the act of perforating the envelope.

Figure 4 is a similar sectional view, but showing the movable member of the folding elements raised from the stationary member, whereby to show the action of the envelope releasing or detaching means.

Referring particularly to the accompanying drawing, 10 represents the base, or bed of the envelope folding machine, having at one of its longer sides the longitudinal bearing 11, in which is arranged the shaft 12, the ends of said shaft being received in similar bearing means in the upper folding element, as will be later explained, herein. In the upper face of the base 10, longitudinally 1931. Seril No. 547,764.

thereon, and adjacent said bearing 11, is a narrow channel 13, in the bottom of which are formed the series of regularly spaced, minute recesses 14.

In the lower face of the upper folding element, which is designated by the numeral 15, and adj acentthe members 16, which en gage on the ends of the shaft 12, is a longitudinal recess 17, and formed in said face, in parallel relation thereto, and arranged on opposite sides thereof, are the slightly shallower channels 18. Secured within the recess 17 and extending throughout the entire length thereof, is a strip 19, in the lower or exposed face of which is secured the longitudinally extending blade 20. The outer or exposed edge of the blade 20 is formed with a series of regularly spaced pointed members or pins 23, each of which is adapted to enter one of the recesses 14, of the base member 10, when the member 15 is swung downwardly, toward said base, in the act of folding the back of the envelope 24, toward the front thereof.

Disposed within eachof the channels 18, and extending longitudinally thereof, is a stripper bar 25, the inner edge of each of which is formed with a slightly projecting horizontal lip 26, the upper face of which is beveled, to properly receive the beveled edge portions of the lower end of the strip 19, so that the strip 19 will positively press the bars 25 against the envelope on the bed 10, as the pins 23 pass through the envelope and into the recesses 14. Formed in the lower face of the member 15, directly above the channels 18, and at a plurality of points, are the deep recesses 27, in each of which is arranged a coil spring 28, the inner end of which bears against the inner wall of the recess, while the outer end thereof bears against the inner faceof the stripper bar 25, a screw28 being engaged throughthe bottom of the recess, through the center of the spring, and into the said inner face of the bar 25, whereby said bar is resiliently held in projected position, beyond the outer ends of the said pins, whereby to strike the upper face of the base member 10, before the points of the pins 23 enter against the tension of the springs 28, until they are entirely within the channels, and

the pins permitted to penetrate the envelope, whereby to form a line of perforations, to later enable a portion of the envelope to be readily torn off, and the contents more easily removed from the envelope.

It is, of course, understood that the points of the pins will have a tendency to stick within the openings which they form in the envelope, thus rendering it necessary to produce a separation therebetween. This is accomplished by the spring pressed stripper bars 25, which instantly move out against the envelope, when the member 15 raises from the bottom member, or base 10.

Particular attention is called to the fact that the drawing shows the perforating pins located at such a position as to perforate the envelope along the fold which lies between the front and back thereof. This may be changed, so that perforations may be made along any line, lengthwise of the envelope, or may be made transversely of the envelope. The main idea resides in the provision of means for perforating the envelope simultaneously with the folding thereof, while another idea resides in the provision of novel means for stripping the envelope from the perforator.

What is claimed is:

1. A perforating device comprising a stationary bed having a series of depressions, a folding member movably connected to the bed and swingable into and out of engagement with the depressed face of the bed, a perforating member in the operating face of the swingable member for passage through an article to be folded and into said recesses, and spring projected strips at opposite sides of said perforating member adapted to be forced into said movable member upon contact with the bed and passage of said perforating member through said article, and lips on said spring projected strips arranged to be en aged by said perforating member, whereby to press said strips into positive engagement with the article, said spring pressed strips being adapted to strip the said article from the perforator upon movement of said member from the bed.

2. A perforating device comprising a bed having a series of recesses in its upper face, a folding element movable toward and away from the bed and having a recess in its bed engaging face, a strip seated in the bottom wall of said recess and dividing the recess into two smaller recesses, a perforating member on said strip, a stripper bar in each of the smaller recesses, bolts disposed through said folding element and secured to said stripper bars, springs on the bolts bearing against said stripper bars, the strip having beveled faces, and lips on the stripper bars engageable by said beveled faces.

3. A perforating device comprising a bed having a series of recesses in its upper face, a folding element movable toward and away from the bed and having a recess in its bed engaging face, a strip seated in the bottom wall of said recess and dividing the recess into two smaller recesses, a perforating member on said strip, a stripper bar in each of the smaller recesses, bolts disposed through said folding element and secured to said stripper bars, springs on the bolts bearing against said stripper bars, the strip having beveled faces, and lips on the stripper bars engageable by said beveled faces.

In testimony whereof, I aflix my signature.

WALTER J. STANLEY. 

